ATMEL_US_ENDTX 323 drivers/tty/serial/atmel_serial.c atmel_port->tx_done_mask = ATMEL_US_ENDTX | ATMEL_US_ENDTX 440 drivers/tty/serial/atmel_serial.c atmel_port->tx_done_mask = ATMEL_US_ENDTX | ATMEL_US_ENDTX 2535 drivers/tty/serial/atmel_serial.c atmel_port->tx_done_mask = ATMEL_US_ENDTX | ATMEL_US_TXBUFE;